n a grounder that rolls along the infield
n a long heavy sea wave as it advances towards the shore
n a small wheel without spokes (as on a roller skate)
n a cylinder that revolves
n a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it
n Old World bird that tumbles or rolls in flight; related to kingfishers
n pigeon that executes backward somersaults in flight or on the ground